Do I contradict myself?
Very well then I contradict myself,
(I am large, I contain multitudes.)Walt Whitman – 1819-1892
It’s still not available.
Windows 10 and Broadcom Bluetooth 3.0
Apparently during the upgrade Windows 10 installs the Broadcom Bluetooth 3.0 USB, which is incorrect for the Logitech mini-transmitter and will not start.
First, download and install the latest version of SetPoint from Logitech [6.67.82_64]. Then under Device Manager uninstall the Broadcom Bluetooth 3.0 USB. Unplug the Logitech dongle, if not done already. Then, with SetPoint opened, plug the dongle back in to an available USB port.
From docstork via https://forums.logitech.com/t5/Keyboards-and-Keyboard-Mice/Windows-10-and-Broadcom-Bluetooth-3-0/m-p/1428404/highlight/true#M56703
Fundamentals of AM and FM Radio
Blinking red light on furnace
The codes are usually explained on a wiring diagram that is on the back panel.
Check yours, it might be different! For me, a continuously blinking light is normal.
- Flashing slow: Normal – no call for heat
- Flashing fast: Normal – call for heat
- Continuous on: Replace IFC (circuit board)
- Continuous off: Check power
- 2 Flashes: External lockout (retries or recycles exceeded)
- 3 Flashes: Pressure switch error
- 4 Flashes: Open limit device
- 5 Flashes: Flame sensed when no flame should be present
- 6 Flashes: 115 VAC power reversed polarity or poor grounding
- 7 Flashes: Gas valve circuit error
- 8 Flashes: Low flame sense signal
- 9 Flashes: Check igniter
FYI, for a modern furnace, Never attempt to light your furnace manually. It likely uses a direct ignition system so when power is cycled, the pilot will then ignite automatically. It’s better to just call your gas company if there was an outage.
Stream Songs From Phone to Computer
There are many apps to stream from computer to phone (AirStream: Stream PC over Air or SoundWire) but I want to listen to a podcast or music using my Android phone but listening on my computer or headset. It’s a good thing you can play the song wirelessly using Bluetooth on both the devices.
- Install Microsoft Windows Mobile Device Center.
- Turn on Bluetooth on the computer and the phone then each of them visible.
- Right-click on the Bluetooth icon in the Windows system tray and select the option Add a device
- Pair your phone and your computer with each other.
- Right-click on the Bluetooth icon in the system tray again but now select Show Bluetooth Devices.
- Right-click on your paired phone and click on the Bluetooth Operations.
- (If A2DP support is available on the phone, it will show an option to Play Music under Audio and Video operation.)
- Click on the link to activate.
- You should now have a player control will appear on your taskbar (If not, try and right-click on the taskbar and select Bluetooth Remote Control under the Toolbars)
If you run into a problem, check this out.
How An Engine Works
Garbage Disposal Stuck Flywheel
A humming sound coming from your garbage disposal? It’s could be a Stuck Flywheel. Use the 1/4” Allen wrench (hex key) that came with Garbage Disposal and twist back and forth a few times.
In the mid 1960’s the Bell System companies used the 505A plug, a round connector with four prongs. We’ve moved to the de facto standard of Registered Jacks.
Common Registered Jacks
|RJ2MB||50-pin micro ribbon||2–12 telephone lines with make-busy arrangement|
|RJ11(C/W)||6P2C||For one telephone line (6P4C if power on second pair)|
|RJ12(C/W)||6P6C||For one telephone line ahead of the key system|
|RJ13(C/W)||6P4C||For one telephone line behind the key system|
|RJ14(C/W)||6P4C||For two telephone lines (6P6C if power on third pair)|
|RJ15C||3-pin weatherproof||For one telephone line|
|RJ18(C/W)||6P6C||For one telephone line with make-busy arrangement|
|RJ21X||50-pin micro ribbon||For up to 25 lines|
|RJ25(C/W)||6P6C||For three telephone lines|
|RJ26X||50-pin micro ribbon||For multiple data lines, universal|
|RJ27X||50-pin micro ribbon||For multiple data lines, programmed|
|RJ31X||8P4C||Allows an alarm system to seize the telephone line to make an outgoing call during an alarm. Jack is placed ahead of all other equipment. (Only 4 conductors are used)|
|RJ38X||8P4C||Similar to RJ31X, with continuity circuit. If the plug is disconnected from the jack shorting bars allows the phone circuit to continue to the site phones. (Only 4 conductors are used)|
|RJ41S||8P8C, keyed||For one data line, universal (fixed loop loss and programmed)|
|RJ45S||8P8C, keyed||For one data line, with programming resistor|
|RJ48C||8P4C||For four-wire data line (DSX-1)|
|RJ48S||8P4C, keyed||For four-wire data line (DDS)|
|RJ48X||8P4C with shorting bar||For four-wire data line (DS1)|
|RJ49C||8P8C||For ISDN BRI via NT1|
|RJ61X||8P8C||For four telephone lines|
|RJ71C||50-pin micro ribbon||12 line series connection using 50-pin connector (with bridging adapter) ahead of customer equipment. Mostly used for call sequencer equipment.|
Many of the basic names have suffixes that indicate subtypes:
- C: flush-mount or surface mount
- F: flex-mount
- W: wall-mount
- L: lamp-mount
- S: single-line
- M: multi-line
- X: complex jack
An RJ-48 plug is often mistaken for RJ-45. On the outside, the two look identical—both are housed in miniature 8-position jacks. The difference is in the wire pairing. RJ-48 connectorIn RJ-48, two of the wires are for transmit, two are for receive, and two are for the drain. The last two wires are reserved for future use
There are three subsets within RJ-48: RJ-48C, RJ-48X, and RJ-48S. RJ-48C and RJ-48X are very similar, though RJ-48C is more common. Both use lines 1, 2, 4, and 5, and connect T1 lines. RJ-48X connectors, however, have shorting bars. RJ-48S uses lines 1, 2, 7, and 8, and generally connects 56K DDS lines.
Here’s how RJ-48C pinning compares to RJ-48S pinning:
|1||Receive ring||Receive data +|
|2||Receive tip||Receive data –|
|3||No connection||No connection|
|4||Transmit ring||No connection|
|5||Transmit tip||No connection|
|6||No connection||No connection|
|7||No connection||Transmit data +|
|8||No connection||Transmit data –|
(*T568B is equivalent to AT&T 258A so for reasons of tradition, it’s likely the wire scheme the telco is going to drop off)
DS0 / DDS Termination
The demarcation point (DMARC) is the point at which the public switched telephone network (PSTN)ends and connects with the customer’s on-premises wiring (called Inside Wire or IW.) Don’t confuse this with a NIU, it’s the same but different.
For residential locations you might have started off with an old Western Electric Company (WECO) lightning protector:
After that they went to the carbon and porcelain blocks which were much smaller:
They got fancy with mounts & attached them to the side of your house:
Then we come to the modern Network Interface Device, Telephone Network Interface, NID, NI, dmarc:
Check out http://catalog.corning.com/CableSystems/en-US/catalog/CategoryBrowser.aspx?cid=network_interface_devices_nids_web
What about businesses? Do they just have 66 of these on the wall, one for each line?
Don’t be crazy, they use a 66 block / M-Block / B-Block as a type of punchdown block to terminate the line.
They could also have a 110 block: